Large-scale Industrial Heat Pumps

Proven high and low temperature heat pumps for up to 150°C and 70 MWth

Heat pumps are an efficient and cost-effective solution for the generation of heat and cold. They lift the temperature by absorbing thermal energy from an existing low-temperature heat source and releasing it to a warmer space. The use of a heat source (e.g., waste heat from industries or renewable heat from nature, like rivers or geothermal sources) enables heat pumps to generate much more heat with a certain amount of electricity, than a simple direct conversion of electric power to heat could do.


During the next years, heat generation will be electrified and decarbonized step by step, due to the gradual replacement of fossil-fired thermal power plants with renewable energies. Excess capacities of renewable energy can be converted into heat, paving the way to CO2-free heat generation. For modern district heating and cooling or industrial heating applications, Siemens Energy’s large-scale industrial heat pumps are the best and most efficient solution to convert electricity to heat.




Sustainable district heating for Berlin, Germany

A new high-temperature heat pump for the cooling center at Potsdamer Platz





Latest heat pump order

From Finspong in Sweden to Mannheim in Germany: First MVV heat pump reaches its destination

Transportation of around 1,400 kilometres on several trucks from the Siemens Energy production site in Sweden to the GKM power plant in Mannheim - Important milestone on the way to green district heating in Mannheim - Commissioning on schedule in autumn 2023

Visit Grosskraftwerk Mannheim (GKM) website
Heat Pumps

Reference example MVV Mannheim, Germany

Basic Principle of Heat Pumps

Heat pumps move thermal energy in the opposite direction of spontaneous heat transfer, by absorbing heat from a cold space and releasing it to a warmer one.


Siemens Energy’s heat pumps use modern, energy-efficient, safe and non-hazardous working fluids. The refrigerants have negligible environmental impact in all aspects:

  • Non-toxic
  • Non-corrosive
  • Ultra-low global warming potential (GWP)
  • No ozone depletion potential (ODP)

We see refrigerants as a design element of a heat pumps system. We will use the optimum refrigerant for the specific solution.

Industrial Sources

Natural Sources


  • More efficient than direct conversion of electric power to heat
  • Simultaneous production of heat and cold
  • CO2-free and free of emissions, when power from renewable sources is used
  • Low levelized life-cycle cost of heat: Long term economic solution with low CAPEX and OPEX
  • Easy to integrate in existing processes and applications
  • Proven, reliable technology: Heat pumps are commonly available and attached to households, large-scale is just up-scaled
  • Waste heat can be re-used and sold for other purposes, connecting different applications (enabling new business models)
  • Dynamic operation: Short ramp rates
  • Power grid stabilization: Peak shaving for excess power generation to balance supply and demand, surplus power from renewable sources can be converted into heat 

Project examples